The Milky Way is just a particle of dust in the universe, and the universe is too big for us to imagine!

Tech 2023-10-20 23:42:50 Source: Network

This picture is a photo of the Earth taken from a distance of 6.4 billion kilometers, which shows that the Earth is very small

This picture is a photo of the Earth taken from a distance of 6.4 billion kilometers, which shows that the Earth is very small. It was taken by the famous Voyager 1 probe.

Famous Voyager One

Voyager One is an unmanned spacecraft developed by NASAThe space probe, due to the unique geometric arrangement of the once-in-a-century planets, emerged as a result of this, including Voyager 2.

On September 5, 1977, the Voyager 1 probe was launched in the United StatesAfter being launched from Cape Canaveral in Florida and accelerated through the planetary gravitational slingshot effect, they explored Jupiter and Saturn.

However, whenVoyager 1 failed to orbit Saturn's moon Titan, causing it to deviate from the ecliptic plane of the solar system, making it unable to continue exploring other planets and flying outside the solar system. The remaining planets were handed over to Voyager 2.

On February 14, 1990, after 13 years of flight, the Voyager 1 spacecraft reached a distance of 6.4 billion kilometers from Earth. It was on this day that NASA controllers used the narrow angle camera carried by the Voyager 1 spacecraft to take a family photo of the solar system, resulting in this photo of the Earth.

We can hardly recognize the appearance of the Earth from the picture because it only occupies 0.12 pixels of the entire photo. Therefore, later on, the famous astronomer Carl Sagan gave him a very special name, called the Dark Blue Dot.

Dim Blue DotMany people are beginning to contemplate how small the Earth is in the universe, as our daily joys, sorrows, and joys occur above this inconspicuous blue dot.

The size of the solar system

Dim Blue Dot64We know that the solar system is actually very vast, with a radius of about 1 light-year, which is equivalent to a spherical space of 2 light-years, and the outermost part isEnveloping the solar systemOort Cloud, if we want to leave the solar system, then only by flying out of Oort Cloud can we truly leave the solar system. But according to Voyager One, currently the farthest human flight, it will take at least tens of thousands of years to fly out of the solar system!

The solar system in the Milky Way is just a particle of dust

However, with the continuous recognition of the universe by humans, astronomers have told us that the solar system is actually only within a larger Milky Way, with a diameter of approximately 100000 to 160000 light-years, and at least 200 billion stars. Our sun is a negligible star among the trillions, leading us around the center of the Milky Way at this moment.

The Milky Way is also a particle of dust in the universe

So now do you think the Milky Way is already very large? Actually, it's not the case. In fact, for the larger scale of the universe, the Milky Way is just a dust, because the number of galaxies in the universe exceeds our imagination, and they will gather together to form larger structures. For example, above the Milky Way, there is a local galaxy group, which is a small collective of 50 galaxies. Among them are the well-known Andromeda galaxy, the Triangular galaxy, and so on,The diameter is approximately 10 million light-years.

However, the local galaxy cluster is not the largest structure, and there is a larger Virgo cluster above it. The Virgo cluster is composed of hundreds of galaxy clusters with a diameter of approximately 110 million light-years.

And there is still a larger structure above the Virgo supercluster, which isThe Raniacea supercluster and the Pisces Cetus supercluster complex are part of the Pisces Cetus supercluster complex, with a diameter of approximately 520 million light-years and containing approximately 100000 galaxies.

The Pisces Cetus supercluster complex is the largest structure in the universe, also known as the Great Wall of the Universe, with a diameter of1 billion light years,He formed a large-scale fiber network in the universe with structures such as the Sloan Great Wall and the Wuxian North Corona Great Wall. All of this is in the observable universe, a spherical space with a diameter of approximately 93 billion light-years.

However, this is not the true size of the universe, but the limit of what we can observe. As the light from distant celestial bodies 930 light-years away has not yet reached Earth, we know nothing beyond what is known to be observable

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